Which tool is typically responsible for precise cutting in CNC milling?

The end mill is the tool typically responsible for precise cutting in CNC milling operations. It is specifically designed for creating intricate shapes, contours, and features in the material being machined. The geometry of an end mill allows it to perform side milling, face milling, and even contouring, making it highly versatile for various applications.

End mills come in a variety of designs, including two-flute, three-flute, and four-flute configurations, each suited for different cutting tasks, such as achieving a finer finish or increasing material removal rates. The sharp cutting edges of end mills are crucial for engendering high precision and ensuring the accuracy of dimensions on the workpiece.

In contrast, the other tools mentioned serve different purposes in the CNC milling process. A turret typically refers to a component on a lathe that holds multiple cutting tools but is not used for the actual cutting itself. A vise is a device that stabilizes and secures the workpiece during machining, while a chuck is used to hold the cutting tool or the workpiece but does not perform cutting. Hence, the end mill distinctly stands out as the tool dedicated to executing precise cutting operations in CNC milling.